Here is what mine topped out at on a dyno, so the speed is accurate. 163mph is how fast it can go in a perfect world with no wind resistance. This bike gets no benefit at speed from ram air, so it does not really have the ability to make more power the way a superbike can.

So 163mph, and the speedo said around 175mph, so you can calculate the error rate from that.

Is the horsepower limited in first gear like my old gixxer 1100's with the anti-wheelie wire? One snip of the wire and the fun began.